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Service Guide ML320/ML321
Chapter 3 Maintenance & Disassembly
Line Feed Motor Gear
NOTES: If the line feed motor gear breaks or becomes worn, it is not necessary to replace the
entire line feed motor assembly. The gear can be replaced without removing the line
feed motor assembly. However, the platen assembly MUST be removed. The line feed
idle gear should be removed ONLY if it must be replaced. The claws will break when the
gear is removed. Anew gear must be installed.
Perform these procedures first:
- 3.2.01 (
)
- 3.2.02 (
)
- 3.2.04 (
)
- 3.2.05 (
)
- 3.2.06 (
)
- 3.2.19.(
)
- Remove the left bail arm.
- Use a small cutting pliers to cut the three claws (1) that secure the line feed motor gear
(2) to the support shaft (3).
- Remove the gear and cut claws.
- Apply one drop of machine oil to the support shaft.
- Slide the new gear onto the support shaft.
- Lock the three claws of the gear into the groove of the shaft.
- Rotate the bias gear towards the front of the printer as far as the gear will turn. This aligns
the bias gear with the platen gear.
- Set the platen assembly in place, securely engaging the line feed motor gear with the platen
gears.